|
0
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
|
9 #include <ngx_event.h>
|
|
|
10 #include <ngx_event_connect.h>
|
|
|
11
|
|
|
12
|
|
36
|
13 ngx_int_t
|
|
|
14 ngx_event_connect_peer(ngx_peer_connection_t *pc)
|
|
0
|
15 {
|
|
92
|
16 int rc;
|
|
|
17 u_int event;
|
|
|
18 ngx_err_t err;
|
|
260
|
19 ngx_uint_t level;
|
|
92
|
20 ngx_socket_t s;
|
|
|
21 ngx_event_t *rev, *wev;
|
|
|
22 ngx_connection_t *c;
|
|
0
|
23
|
|
260
|
24 rc = pc->get(pc, pc->data);
|
|
|
25 if (rc != NGX_OK) {
|
|
|
26 return rc;
|
|
0
|
27 }
|
|
|
28
|
|
260
|
29 s = ngx_socket(pc->sockaddr->sa_family, SOCK_STREAM, 0);
|
|
0
|
30
|
|
260
|
31 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pc->log, 0, "socket %d", s);
|
|
58
|
32
|
|
0
|
33 if (s == -1) {
|
|
|
34 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
35 ngx_socket_n " failed");
|
|
|
36 return NGX_ERROR;
|
|
|
37 }
|
|
|
38
|
|
|
39
|
|
92
|
40 c = ngx_get_connection(s, pc->log);
|
|
0
|
41
|
|
92
|
42 if (c == NULL) {
|
|
0
|
43 if (ngx_close_socket(s) == -1) {
|
|
|
44 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
45 ngx_close_socket_n "failed");
|
|
|
46 }
|
|
|
47
|
|
|
48 return NGX_ERROR;
|
|
|
49 }
|
|
|
50
|
|
|
51 if (pc->rcvbuf) {
|
|
|
52 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF,
|
|
112
|
53 (const void *) &pc->rcvbuf, sizeof(int)) == -1)
|
|
|
54 {
|
|
0
|
55 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
56 "setsockopt(SO_RCVBUF) failed");
|
|
|
57
|
|
92
|
58 ngx_free_connection(c);
|
|
|
59
|
|
0
|
60 if (ngx_close_socket(s) == -1) {
|
|
|
61 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
62 ngx_close_socket_n " failed");
|
|
|
63 }
|
|
|
64
|
|
|
65 return NGX_ERROR;
|
|
|
66 }
|
|
|
67 }
|
|
|
68
|
|
|
69 if (ngx_nonblocking(s) == -1) {
|
|
|
70 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
71 ngx_nonblocking_n " failed");
|
|
|
72
|
|
92
|
73 ngx_free_connection(c);
|
|
|
74
|
|
0
|
75 if (ngx_close_socket(s) == -1) {
|
|
|
76 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
77 ngx_close_socket_n " failed");
|
|
|
78 }
|
|
|
79
|
|
|
80 return NGX_ERROR;
|
|
|
81 }
|
|
|
82
|
|
92
|
83 c->recv = ngx_recv;
|
|
|
84 c->send = ngx_send;
|
|
126
|
85 c->recv_chain = ngx_recv_chain;
|
|
92
|
86 c->send_chain = ngx_send_chain;
|
|
32
|
87
|
|
92
|
88 c->log_error = pc->log_error;
|
|
0
|
89
|
|
260
|
90 if (pc->sockaddr->sa_family != AF_INET) {
|
|
92
|
91 c->tcp_nopush = NGX_TCP_NOPUSH_DISABLED;
|
|
|
92 c->tcp_nodelay = NGX_TCP_NODELAY_DISABLED;
|
|
132
|
93
|
|
|
94 #if (NGX_SOLARIS)
|
|
|
95 /* Solaris's sendfilev() supports AF_NCA, AF_INET, and AF_INET6 */
|
|
|
96 c->sendfile = 0;
|
|
|
97 #endif
|
|
0
|
98 }
|
|
|
99
|
|
110
|
100 rev = c->read;
|
|
|
101 wev = c->write;
|
|
0
|
102
|
|
|
103 rev->log = pc->log;
|
|
|
104 wev->log = pc->log;
|
|
|
105
|
|
|
106 pc->connection = c;
|
|
|
107
|
|
|
108 /*
|
|
110
|
109 * TODO: MT: - ngx_atomic_fetch_add()
|
|
0
|
110 * or protection by critical section or mutex
|
|
|
111 *
|
|
|
112 * TODO: MP: - allocated in a shared memory
|
|
110
|
113 * - ngx_atomic_fetch_add()
|
|
0
|
114 * or protection by critical section or mutex
|
|
|
115 */
|
|
|
116
|
|
110
|
117 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
|
|
0
|
118
|
|
|
119 #if (NGX_THREADS)
|
|
|
120 rev->lock = pc->lock;
|
|
|
121 wev->lock = pc->lock;
|
|
|
122 rev->own_lock = &c->lock;
|
|
|
123 wev->own_lock = &c->lock;
|
|
|
124 #endif
|
|
|
125
|
|
|
126 if (ngx_add_conn) {
|
|
|
127 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
|
128 return NGX_ERROR;
|
|
|
129 }
|
|
126
|
130 }
|
|
0
|
131
|
|
92
|
132 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, pc->log, 0,
|
|
260
|
133 "connect to %V, fd:%d #%d", pc->name, s, c->number);
|
|
0
|
134
|
|
260
|
135 rc = connect(s, pc->sockaddr, pc->socklen);
|
|
0
|
136
|
|
|
137 if (rc == -1) {
|
|
|
138 err = ngx_socket_errno;
|
|
|
139
|
|
|
140 /* Winsock returns WSAEWOULDBLOCK (NGX_EAGAIN) */
|
|
|
141
|
|
|
142 if (err != NGX_EINPROGRESS && err != NGX_EAGAIN) {
|
|
36
|
143
|
|
90
|
144 if (err == NGX_ECONNREFUSED || err == NGX_EHOSTUNREACH) {
|
|
|
145 level = NGX_LOG_ERR;
|
|
|
146 } else {
|
|
|
147 level = NGX_LOG_CRIT;
|
|
|
148 }
|
|
36
|
149
|
|
90
|
150 ngx_log_error(level, c->log, err, "connect() to %V failed",
|
|
260
|
151 pc->name);
|
|
0
|
152
|
|
92
|
153 return NGX_DECLINED;
|
|
0
|
154 }
|
|
|
155 }
|
|
|
156
|
|
|
157 if (ngx_add_conn) {
|
|
|
158 if (rc == -1) {
|
|
36
|
159
|
|
0
|
160 /* NGX_EINPROGRESS */
|
|
36
|
161
|
|
0
|
162 return NGX_AGAIN;
|
|
|
163 }
|
|
126
|
164
|
|
0
|
165 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connected");
|
|
32
|
166
|
|
|
167 wev->ready = 1;
|
|
|
168
|
|
0
|
169 return NGX_OK;
|
|
|
170 }
|
|
|
171
|
|
|
172 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
173
|
|
4
|
174 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pc->log, ngx_socket_errno,
|
|
|
175 "connect(): %d", rc);
|
|
|
176
|
|
0
|
177 /* aio, iocp */
|
|
|
178
|
|
|
179 if (ngx_blocking(s) == -1) {
|
|
|
180 ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
|
|
|
181 ngx_blocking_n " failed");
|
|
|
182 return NGX_ERROR;
|
|
|
183 }
|
|
|
184
|
|
|
185 /*
|
|
36
|
186 * FreeBSD's aio allows to post an operation on non-connected socket.
|
|
0
|
187 * NT does not support it.
|
|
126
|
188 *
|
|
0
|
189 * TODO: check in Win32, etc. As workaround we can use NGX_ONESHOT_EVENT
|
|
|
190 */
|
|
126
|
191
|
|
0
|
192 rev->ready = 1;
|
|
|
193 wev->ready = 1;
|
|
|
194
|
|
|
195 return NGX_OK;
|
|
|
196 }
|
|
|
197
|
|
36
|
198 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
199
|
|
|
200 /* kqueue */
|
|
|
201
|
|
0
|
202 event = NGX_CLEAR_EVENT;
|
|
|
203
|
|
36
|
204 } else {
|
|
|
205
|
|
|
206 /* select, poll, /dev/poll */
|
|
|
207
|
|
0
|
208 event = NGX_LEVEL_EVENT;
|
|
|
209 }
|
|
|
210
|
|
|
211 if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) {
|
|
|
212 return NGX_ERROR;
|
|
|
213 }
|
|
|
214
|
|
|
215 if (rc == -1) {
|
|
|
216
|
|
|
217 /* NGX_EINPROGRESS */
|
|
|
218
|
|
|
219 if (ngx_add_event(wev, NGX_WRITE_EVENT, event) != NGX_OK) {
|
|
|
220 return NGX_ERROR;
|
|
|
221 }
|
|
|
222
|
|
|
223 return NGX_AGAIN;
|
|
|
224 }
|
|
|
225
|
|
|
226 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connected");
|
|
|
227
|
|
|
228 wev->ready = 1;
|
|
|
229
|
|
|
230 return NGX_OK;
|
|
|
231 }
|
|
|
232
|
|
|
233
|
|
260
|
234 ngx_int_t
|
|
|
235 ngx_event_get_peer(ngx_peer_connection_t *pc, void *data)
|
|
0
|
236 {
|
|
260
|
237 return NGX_OK;
|
|
0
|
238 }
|
